Papers by Author: Ping Fu

Abstract: Tire retreading refers to the waste tire repair, polishing and gluing, pressing process, and then curing,which restore its use value. So far it is one of the most direct and most effective and the most economic way of the utilization of waste tire. Normally, because of the high profit, the retreading of truck tire and engineering tire had received much attention, while that of passenger car tire had been ignored. However, as the number of car has been increasing for many years, the passenger tire retreading is urgently needed. In this article, after the further study of related retreading theory, it is determined by using the prevulcanization retreading technology for renovation of radial tire. The renovation process including the carcass of tire inspection, repair, polishing, brush glue, tread molding (including post pad, pre vulcanized tread and pressed), vulcanization, final inspection. And the related equipment has been developed for the passenger tire retreading molding, include lifting inspection machine, model profile grinding machine, winding machine, model setting vulcanizing machine and tread of orientation of short fiber extrusion and other special equipment. This research solved the problem of backward technology, the short service life and poor quality.

Abstract: In this paper, using the finite element software of ADINA to analyze and simulate the meshing rotor element of the double rotor in the block rubber continuous mixer in the computer, the paragraphs games pressure, viscosity, shear stress field are analyzed. Through simulation analysis we found that mesh mixing rotor element type in rubber mixing process has strong shear, tensile, compression, stirring, mixing and the axial reciprocating cutting action on the rubber, realize the better dispersion and distribution mixing all kinds of material, reached good mixing effect. Rubber mixing rotor continuous component of three dimensional flow field’s simulation provides reliable theoretical basis and technical parameters for optimal design of rubber mixing rotor.

Abstract: At present, the open mill, internal mixer and screw plasticator were used widely in the rubber industry. But they belonged to the intermittent mixing equipments and had shortcomings that could not be avoided. According to these problems, a new experimental platform for rubber mastication was self-made and the optimal process parameters were determined in this paper. Through the massive experiment contrast result, the maximum power dissipation of the block rubber continuous mastication machine was lower than internal mixer when produced the same amount of rubber, specific energy consumption was also lower. And production capacity was 3 times than internal mixer, Mooney stick degrees approached to that of internal mixer. All of these indicated that new rubber mastication experimental platform improved production efficiency and reduced the energy consumption.

Abstract: The three-dimensional flow fields produced by the modular dual-rotor of rubber continuous plasticator were numerically simulated and analyzed by using ADINA, the FEM simulation software. So the velocity field distribution of each rotor element was shown by the simulations. Through the analysis, the double rotors rotated inward had high efficiency of pumping and plasticization. The rubber compound was subjected to the strong shearing action; squeezing action and stretch effect in the rubber plasticate process. The simulation calculation had great significance for the rotor optimizing design.

Abstract: Two rotor configurations were designed for the continuous plasticator in this paper. The rotor configuration, rotor speed and machine barrel temperature were set as the variable parameters in this contrast experiment. What’s more, the experimental investigation showed that, the three factors had effects on the plastication performance. When the temperature of machine barrels and extrusion dies reached and the rotor speed was at , the plastication performance of two rotor configurations was relatively better. And the rotor configuration II was better than I by synthesizing all kinds of factors.

Abstract: In this paper adopting the orthogonal method, self-developed compound formulation had tested, and the relationship between the physical properties of vulcanized rubber and rectangular synchronous rotor mixer parameters had researched. The results showed that when the fill factor was 0.6, the rotor speed was 70r/min, cooling water temperature was 45 °C, pressure on the top bolt was 0.8Mpa, the physical properties of the vulcanized rubber was best.

Abstract: Powder was fed to improving or increasing rubber performance in rubber production. Due to the variety of powder, different feeding quantity and material liquidity and high precision needed, often choose screw conveyor to convey and weigh all kinds of powder. This paper mainly introduce the structure of the screw conveyor for rubber production, analyses the impact of the main parameters of screw conveyor on its performance and conveying capacity. A method of chosen and confirmed the mainly design parameters of screw conveyor was illustrated, and introduced the helical blade and screw shaft of the screw conveyor processing method combining with actual production.

Abstract: By using self-made asymmetric AC - DC power supply and adding SiC in ferrous chloride bath, the high performance Fe-SiC iron-based composite coatings were prepared by electrodeposition method. The effect of Phase, composition and SiC particle content on the surface morphology, structure, hardness, wear resistance and corrosion resistance of Fe-SiC composite coatings were studied. The process parameters of Fe-SiC composite plating were optimized. The results showed that the micro-cracks in composite coatings would reduced and the hardness, wear resistance and corrosion resistance will increased by adding SiC particles under the condition of optimum process.

Abstract: To improve the mechanical product hardness, wear resistance and corrosion resistance, Fe-SiC composite plating process and properties have been studied. By using self-made asymmetric AC - DC power supply and adding SiC in ferrous chloride bath, the high performance Fe-SiC composite coatings are prepared by electrodeposition method. The effect of Phase, composition and SiC particle content on the surface morphology, structure, hardness, wear resistance and corrosion resistance of Fe-SiC composite coatings are studied. The process parameters of Fe-SiC composite plating are optimized. The results show that the micro-cracks in composite coatings will reduced and the hardness, wear resistance and corrosion resistance will increased by adding SiC particles under the condition of optimum process.

Abstract: The physical, mathematical and finite element model of the extruding part of mixing-extruding machine was established to carry on the finite element simulation of the extrusion part flow field. Results showed that the double cone screw have better mixing and feeding properties than single screw.